430 Thermal Efficiency Enhancement of Ocean Thermal Energy Conversion (OTEC) Using Solar Thermal Energy

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  • YAMADA Noboru
    Department of Mechanical Engineering, Nagaoka University of Technology
  • HOSHI Akira
    Department of Mechanical Engineering, Ichinoseki National College of Technology
  • IKEGAMI Yasuyuki
    Institute of Ocean Energy, Saga University

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Other Title
  • 430 太陽熱を利用した海洋温度差発電(OTEC)の熱効率向上に関する研究(太陽エネルギー,環境保全型エネルギー技術分野)

Description

Ocean thermal energy conversion (OTEC) is a power generation system that utilizes small temperature differences between the surface and deep sea water. This paper describes the simulation results of the thermal efficiency of an OTEC plant that utilizes not only ocean thermal energy but also solar thermal energy as a heat source. This power generation system is termed SOTEC (solar and ocean thermal energy conversion). Simulation results of a 100-kWe SOTEC plant, in which the solar collector is installed in two configurations, are obtained and compared with those of an ordinary OTEC plant. The simulation result shows that the proposed SOTEC plant can enhance the annual mean thermal efficiency up to 1.5 times higher than that of the ordinary OTEC plant.

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